I wouldn't recommend anyone going voluntarily into the psychiatric wards in my local area. A very risky thing to do. You may be assaulted, forcibly treated, your carer badmouthed in psychiatric notes, bullied by groups of nurses, your human rights rode roughshod over.
And if you complain, well they won't believe you. The psychiatric nurses are always right, their word is taken as true. This gives them carte blanche to do what they like with detained and locked-in patients. Deny access to a toilet, water to drink, advocacy, a pen to write with, contact with mother or carer. In fact they can do what they like and not have to answer for it.
Great job if you can get it.